MEAO001 - Error calling &1 (Check input parameters)

SAP Error Message - Details

• Message type: E = Error

• Message class: MEAO - Messages for Development Class MEAO

• Message number: 001

• Message text: Error calling &1 (Check input parameters)

What causes this issue?

The combination of input parameters passed on to function module &V1&
is not allowed.
The function module can be invoked either with two input parameters for
purchasing info records or with two input parameters for outline
agreements.
You must note the following:
If you invoke the function module for purchasing info records, you must
populate the two input parameters for purchasing info records but
<ZH>not</> the input parameter for outline agreements.
If you invoke the function module for outline agreements, you must
populate the input parameter for outline agreements but <ZH>not
</> the input parameter for purchasing info records.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MEAO001 - Error calling &1 (Check input parameters) ?

  The SAP error message MEAO001, which states "Error calling &1 (Check input parameters)," typically occurs in the context of the Materials Management (MM) module, particularly when dealing with purchasing documents or related processes. This error indicates that there is an issue with the parameters being passed to a function module or method, which is causing the system to fail in executing the desired operation.
  Causes:
  
  Incorrect Input Parameters: The parameters being passed to the function module may be incorrect or incomplete. This could be due to missing mandatory fields or incorrect data types.
  Configuration Issues: There may be configuration settings in the system that are not set up correctly, leading to the error when trying to call a specific function.
  Authorization Issues: The user may not have the necessary authorizations to execute the function being called.
  Custom Code Issues: If there are custom enhancements or modifications in the system, they may be causing the error due to incorrect logic or data handling.
  System Bugs: There could be bugs in the SAP system or specific patches that need to be applied.
  
  Solutions:
  
  Check Input Parameters: Review the input parameters being passed to the function. Ensure that all required fields are filled out correctly and that the data types match the expected values.
  Debugging: If you have access to debugging tools, you can set breakpoints in the relevant function module to see what parameters are being passed and where the error occurs.
  Review Configuration: Check the configuration settings related to the purchasing documents or the specific function being called. Ensure that everything is set up correctly.
  Authorization Check: Verify that the user has the necessary authorizations to perform the action that is causing the error.
  Consult Documentation: Look into SAP documentation or notes related to the specific function module or transaction to see if there are known issues or additional requirements.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. Provide them with detailed information about the error, including transaction codes, input parameters, and any relevant logs.
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may be using transaction codes like ME21N (Create Purchase Order), ME22N (Change Purchase Order), or others related to purchasing.
  Function Modules: The error may be related to specific function modules in the MM area. You can look up the function module mentioned in the error message for more details.
  SAP Notes: Search for SAP Notes related to MEAO001 in the SAP Support Portal, as there may be specific fixes or recommendations provided by SAP.
  
  By following these steps, you should be able to identify the cause of the MEAO001 error and implement a solution to resolve it.